Fule Pump or Fuel Regulator? Options

[chrispovoas]

Hi guys, so on my journey to get the engine running an pulling correctly I have done the following;

1) Tracked down all of the air leaks so that the engne stalls if i cover up the main air intake on the air box

2) Refurbed all 4 injectors

3) Replaced the ignition leads, Rotor and distributor cap

4) Installed refurbed AA Valve

5) Checked the spark on all leads

6) Installed new plugs

However, the engine still performs / runs like its on 3 cylinders... Once the injectors were done the engine was running sweet.. Parked the car for 2 weeks, engine back to running like a pig.. All 4 plugs were quite black (even after only running for about 3 miles in total since they were installed), which shows all 4 are getting fuel but running very rich.

If the electrics are good, then it must be fuel? Perhaps the Pump or regulator?.. Anything i can check / test by myself? as my driveway is steep and the car doesnt have the power to get up it to take it to a mechanic

Cheers

Chris

[Superhawk996]

Check cylinder head temperature sensor (CHT)

Check manifold pressure sensor (MPS).

Both of these affect mixture. Either can cause an excessive rich condition.

CHT is the most likely. MPS rebuild kits are available from Tangerine Racing.

[JeffBowlsby]

Check cylinder head temperature sensor (CHT)

Check manifold pressure sensor (MPS).

Both of these affect mixture. Either can cause an excessive rich condition.

CHT is the most likely. MPS rebuild kits are available from Tangerine Racing.

^^^Agree. It may be something else but verify functionality these parts first. You wil need a Mityvac hand pump and an ohmmeter.

[chrispovoas]

Check cylinder head temperature sensor (CHT)

Check manifold pressure sensor (MPS).

Both of these affect mixture. Either can cause an excessive rich condition.

CHT is the most likely. MPS rebuild kits are available from Tangerine Racing.

^^^Agree. It may be something else but verify functionality these parts first. You wil need a Mityvac hand pump and an ohmmeter.

Thanks Jeff, was wondering how to check....